SER Performance of OFDM-Based AF and DF Cooperative Networks over Asymmetric Fading Channels
Kopal Dwivedi, Akash Agarwal, Preetam Kumar · 2017
Cooperative communication provides spatial diversity gain via cooperation of in-cell users, located at different geographical locations that combat fading effects induced by multipath propagation environment. In this paper, the SER performance of OFDM-based Amplify-and-Forward (AF) and Decode-and-Forward (DF) cooperative diversity schemes over asymmetric fading channels has been investigated. The Source-Relay (SR) and Relay-Destination (RD) links are subjected to Rayleigh fading distribution whereas, Source-Destination (SD) link follows generalized Gamma fading distribution. Firstly, SER performance of M-ary Phase Shift Keying (MPSK) has been derived for asymmetric fading channels. Later, the average Symbol Error Rate (SER) of Binary (B)-PSK (M=2) and Quadrature(Q)-PSK (M=4) are analyzed with different channel parameters. Finally, simulation results are presented to corroborate theoretically derived results.